python readmidi.py Tron_Son_of_Flynn.mid   0  s1.wav --syn_e

python readmidi.py Tron_Son_of_Flynn.mid   1  s2.wav --syn_samp

python readmidi.py Tron_Son_of_Flynn.mid   2  s3.wav --syn_samp

python readmidi.py Tron_Son_of_Flynn.mid   3  s4.wav --syn_c